What is sinus tachycardia?

Univ. of Nev. School of Medicine, Family Medicine

Sinus tachycardia is a rapid heart rate with a normal rhythm, meaning that your heart continues to beat at normal intervals, just faster than normal. This happens in certain diseases but also in response to normal events and activities like exercise, stress and fear.

Texas Cardiac Arrhythmia Institute

Sinus tachycardia is a common heart-rhythm disturbance, or arrhythmia, that rarely requires treatment. Sinus tachycardia is a normal, harmless elevation in the heart rate because of exercise, excitement, or fever.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.

Arrhythmia

A type of heart disease, arrhythmia causes our hearts to beat too fast, too slow or with an irregular rhythm. Even though there are more than a dozen forms of arrhythmia, only a handful of reasons typically cause them. A common cause is coronary artery disease, the most common type of heart disease that affects adults. An injury from a heart attack and changes in your heart muscle can also cause an arrhythmia.

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